Evaluation & Guardrails

Key Metrics (draft):

Metric	Definition	Target
HitRate@6	Relevant ideas in top 6 / total relevant	>0.65 early
Diversity Score	Unique primary tags / 6	≥4
Personalization Lift	HitRate(user) - HitRate(global)	+10%
JSON Validity Rate	Valid structured responses	>97%
Hallucination Rate	Uncited claim count / ideas	<1%

Test Harness Layers (planned): unit prompt tests, synthetic feedback simulation, red-team adversarial prompts.